Lubricator



(No Moden.) 2 sneetssneet 1.

W. W. MITCHELL.

LUBRIGATOR.

N. 250,944. Patented Deo. 13,1881.

Www@ ATTORNEYS (No Model.) 2 Sheets-'Sheet 2.

- l W. W. MITCHELL.

LUBRIGATOR.

mami` Deo. 13,1881.

INVENTOR l L y AT ORNEYS WITNESSES UNITED STATES PATENT OEEICE.

XVILLIAH W. MITCHELL, OF NEV HAVEN, CONNECTICUT.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 250,944, dated December13, 1881.

' Application led May 12, 1881. (No model.)

1" o all whom 'it may concern:

Be it known that l, WILLIAM W. MITCHELL, a citizen of the United States,resident of New Haven, in the county of New Haven and StateofCounecticut, have invented a new and valuable Improvement inLubricators; and I do hereby declare that the following is afull, clear,and exact description of the construction and operation of the same,reference being had to the annexed drawings, making a part of thisspecification, and to the letters and figures of reference markedthereon.

Figure l of the drawings is a representation of a vertical sectionofmyinvention. Fig. 2 is a detail view; and Figs. 3, 4, 5, and 6 aremodifications.

This invention has relation to lubricators for locomotives and othersteam-engines; and it consists in the combination, with the water orcondensing chamber and the oil-chamber, ot' a steam-chamber, and withinthe same a vapor-conductor.

It also consists in the construction and novel arrangement of thefeed-passage for the oil, the partition above the glass tube, and thepassages or tubes connecting therewith, of the grooved feeding-plu g andthe bearings for the glass tube, and of other devices in connection withthe steam-chamber, the condensing-chamber, and the oil-cup, ashereinafter shown and described.

In the accompanying drawings, the letterA designates the boiler, towhich the lubricator is attached; and B represents the steam-chamber ofthe lubricator, into which steam is admitted from the boiler through apassage, a, which is provided with a valve, b, to cut off communicationwith the boiler. The steamchamber is provided with a conductor orpassage, c, connecting with the pipe d, which leads to the cylinder orvalve-chest of the engine.

C represents the condensing or water chaml ber, which is provided withan interior upright tube, e, extending from the passage g, communicatingwith the steam-chamber nearly to the top of the water-chamber, as shownin the drawings. Through the passage g and the tube c steam passes intothe chamber C, and, becoming condensed, descendsin the form of waterthrough the passage 7L and tube k to the lower portion of the oil cup orreservoir D. The passage h is provided with a valve, b',

whereby the downward iiow of the water is regulated or arrestedaltogether, according to requirement. Through the arm E, in which thesteam-passage gis arranged. an oil-passage, Z, also extends, beingprovided with a regulating or cut-ott' valve, b, and with a spout ordischarge, m, within the steam-chamber.

F indicates a glass tube or water-sight, arranged in oil-tight bearingsn, into which it is passed through an opening, p, which is afterwardclosed by means ofthe screw-plug G, having a circumferential groove, r,and passages s, through which oil is fed to the waterglass F. Thecircumferential groove r permits a constant How of oil, whereas if nogroove were employed and the plug screwed either too little or too far,the passages would not align, and a meager flow of oil would result.Into the upper end of said water glass or tube F extends one end of atube, l', pass-` ing through a wall or bearing, t, above said glass F,and separating the latter from the oil-filling passage H. The other endof the tube l' connectswith the oil-passage l in the arm E. The passageH, leading to the oil cup or reservoir D, is closed at the outer end bymeans of the screw-plug K, which engages with the threaded opening u.From the lower end of the oil-cup extends upward nearly to the upper endof the same a tube, o, which connects at its lower end with anoil-passage, w, which extends to the feed-plug G at the lower end of theglass tube F.

L indicates the water-discharge, having the' valve bf".

The operation of the lubricator is as follows: Steam is admitted to thesteam-chamber B from the boiler, and passing thence into the chamber Cis condensed and carried downward through the passage h and tube 7c intothe oil-chamberD, raising the oiltherein, which tiows down the tube fvand through the passage zo and plug G into the glass tube F. This tubeis designed to have been previously tilled with the water ofcondensation, and the oil passes upward through the water in the formot' visible drops, indicating the rapidity of feed. The oil passes fromthe glass tube, through the tube l and passage l and spout or tube m,out into the steam-chamber at or near the mouth or wall of aconducting-passage, c, where it is IOO Vaporized and commingled with theparticles of watery Vapor, and passes through the conductor or passage cin the form of greasy steam t0 the pipe leading to the cylinder,valve-chest, or steam-pipe of a locomotive or steam-en gine.

It is evident that many slight alterations in the construction of asteam-chamber can be made for accomplishing the same result; and I donot, therefore, limit myselfl to the exact construction herein shown anddescribed.

Having described this invention, What I claim, and desire to secure byLetters Patent, 1s-

1. In a lubricator, the combination, with a condenser, C, and anoil-chamber, D, of a steam-chamber, B, and Within the same a vaporconductor or passage, c, substantially as specified. y

2. In a lubricator having aglass sight-tube, an oil-passage, l, a tube,l', an oil-reservoir, and the bearing t at the top of the glass tubeforming the Wall ot' the oil-filling passage, substantially as specied.

3. In a lubricator, the open lower bearing for the lower end of theglass tube and. the grooved feed-plug G, having the passages s,

in combination with the oil-passage w, substantially as specied.

4. In a lubricator, the combination, with the glass tube F, thesteam-chamber B, the oilchamber D, and the condenser C, of thesteampassage g and. tube e, the Water-passage h and tube 7c, and theoil-passages l w and tubes m l n, in connection with the valves b b,substantially as specified.

5. A steam-reservoir for lubricators having an oil-discharge, m, and avapor conductor or passage, c, substantially as specified.

6. In a lubricator, the combination,with the oil-reservoir, of the Wallor partition over the glass tube forming the oil-illing passage H, andthe feeding-tube l', extending through said filling-passage to theoil-discharging passages l and m, substantially as specified.

In testimony that I claim the above I have vhereunto subscribed my namein the presence of two witnesses.

WM. W. MITCHELL.

Witnesses:

THEO. MUNGEN, PHILIP G. MASI.

